forked from mirrors/gecko-dev
92 lines
2.9 KiB
C++
92 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ListMutationObserver.h"
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#include "mozilla/dom/HTMLInputElement.h"
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#include "nsIFrame.h"
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namespace mozilla {
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NS_IMPL_ISUPPORTS(ListMutationObserver, nsIMutationObserver)
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ListMutationObserver::~ListMutationObserver() = default;
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void ListMutationObserver::Attach(bool aRepaint) {
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nsAutoString id;
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if (InputElement().GetAttr(nsGkAtoms::list_, id)) {
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Unlink();
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RefPtr<nsAtom> idAtom = NS_AtomizeMainThread(id);
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ResetWithID(InputElement(), idAtom);
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AddObserverIfNeeded();
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}
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if (aRepaint) {
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mOwningElementFrame->InvalidateFrame();
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}
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}
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void ListMutationObserver::AddObserverIfNeeded() {
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if (auto* list = get()) {
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if (list->IsHTMLElement(nsGkAtoms::datalist)) {
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list->AddMutationObserver(this);
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}
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}
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}
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void ListMutationObserver::RemoveObserverIfNeeded(dom::Element* aList) {
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if (aList && aList->IsHTMLElement(nsGkAtoms::datalist)) {
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aList->RemoveMutationObserver(this);
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}
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}
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void ListMutationObserver::Detach() {
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RemoveObserverIfNeeded();
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Unlink();
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}
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dom::HTMLInputElement& ListMutationObserver::InputElement() const {
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MOZ_ASSERT(mOwningElementFrame->GetContent()->IsHTMLElement(nsGkAtoms::input),
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"bad cast");
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return *static_cast<dom::HTMLInputElement*>(
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mOwningElementFrame->GetContent());
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}
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void ListMutationObserver::AttributeChanged(dom::Element* aElement,
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int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType,
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const nsAttrValue* aOldValue) {
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if (aAttribute == nsGkAtoms::value && aNameSpaceID == kNameSpaceID_None &&
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aElement->IsHTMLElement(nsGkAtoms::option)) {
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mOwningElementFrame->InvalidateFrame();
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}
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}
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void ListMutationObserver::CharacterDataChanged(
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nsIContent* aContent, const CharacterDataChangeInfo& aInfo) {
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mOwningElementFrame->InvalidateFrame();
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}
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void ListMutationObserver::ContentAppended(nsIContent* aFirstNewContent) {
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mOwningElementFrame->InvalidateFrame();
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}
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void ListMutationObserver::ContentInserted(nsIContent* aChild) {
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mOwningElementFrame->InvalidateFrame();
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}
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void ListMutationObserver::ContentRemoved(nsIContent* aChild,
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nsIContent* aPreviousSibling) {
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mOwningElementFrame->InvalidateFrame();
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}
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void ListMutationObserver::ElementChanged(dom::Element* aFrom,
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dom::Element* aTo) {
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IDTracker::ElementChanged(aFrom, aTo);
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RemoveObserverIfNeeded(aFrom);
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AddObserverIfNeeded();
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mOwningElementFrame->InvalidateFrame();
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}
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} // namespace mozilla
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